Trifluoromethyl-substituted pyridyl- and pyrazolylboronic acids and esters: Synthesis and Suzuki-Miyaura cross-coupling reactions
The synthesis of trifluoromethyl-substituted pyridylboronic acids and pyrazolylboronic esters is described via lithiation-boronation protocols (Schemes 1, 3 and 4). A study of their palladium-catalysed cross-couplings with heteroaryl halides is presented.
Clapham, Kate M.,Batsanov, Andrei S.,Bryce, Martin R.,Tarbit, Brian
supporting information; experimental part
p. 2155 - 2161
(2009/09/04)
DIHYDROXY(3-PYRIDYL)BORANE COMPOUNDS
A dihydroxy(3-pyridyl)borane compound of the formula (1): wherein R1 represents a hydrogen atom, halogen atom or alkoxycarbonylamino group; R2 represents a hydrogen atom, halogen atom, alkyl group or fluoroalkyl group; with the proviso that the case wherein both R1 and R2 are hydrogen atoms is excepted.
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Page 6
(2010/02/08)
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